<!DOCTYPE html>
<html>
	<head>
		<meta http-equiv="content-type" content="text/html; charset=utf-8" />
		<title>后台登录</title>
	</head>
	<body>
		<form method="post" action="./admin.php?a=login">
			<span>用户名:</span><input type="text" name="username">
			<br>
			<span>密码:</span><input type="password" name="password">
			<br>
			<input type="submit" value="登录">
		</form>
	</body>
</html>